Light Bulb Switch

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body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #e8e8e8;
  }
  .l {
    display: block;
    margin-bottom: 1.5em;
    font-size: 1em;
  }
  
  .l {
    background-color: rgba(0,0,0,0.7);
    border-radius: 0.75em;
    box-shadow: 0.125em 0.125em 0 0.125em rgba(0,0,0,0.3) inset;
    color: #fdea7b;
    display: inline-flex;
    align-items: center;
    margin: auto;
    padding: 0.15em;
    width: 3em;
    height: 1.5em;
    transition: background-color 0.1s 0.3s ease-out, box-shadow 0.1s 0.3s ease-out;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
  }
  
  .l:before, .l:after {
    content: "";
    display: block;
  }
  
  .l:before {
    background-color: #d7d7d7;
    border-radius: 50%;
    width: 1.2em;
    height: 1.2em;
    transition: background-color 0.1s 0.3s ease-out, transform 0.3s ease-out;
    z-index: 1;
  }
  
  .l:after {
    background: linear-gradient(transparent 50%, rgba(0,0,0,0.15) 0) 0 50% / 50% 100%,
          repeating-linear-gradient(90deg,#bbb 0,#bbb,#bbb 20%,#999 20%,#999 40%) 0 50% / 50% 100%,
          radial-gradient(circle at 50% 50%,#888 25%, transparent 26%);
    background-repeat: no-repeat;
    border: 0.25em solid transparent;
    border-left: 0.4em solid #d8d8d8;
    border-right: 0 solid transparent;
    transition: border-left-color 0.1s 0.3s ease-out, transform 0.3s ease-out;
    transform: translateX(-22.5%);
    transform-origin: 25% 50%;
    width: 1.2em;
    height: 1em;
    box-sizing: border-box;
  }
  .l:checked {
    background-color: rgba(0,0,0,0.45);
    box-shadow: 0.125em 0.125em 0 0.125em rgba(0,0,0,0.1) inset;
  }
  
  .l:checked:before {
    background-color: currentColor;
    transform: translateX(125%)
  }
  
  .l:checked:after {
    border-left-color: currentColor;
    transform: translateX(-2.5%) rotateY(180deg);
  }
  .l:focus {
    outline: 0;
  }

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